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Viking Type 9

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AKA: RTV-N-12a;Viking Model II. Status: Retired 1957. First Launch: 1952-06-06. Last Launch: 1957-05-01. Number: 7 . Payload: 450 kg (990 lb). Thrust: 93.00 kN (20,907 lbf). Gross mass: 6,800 kg (14,900 lb). Height: 12.80 m (41.90 ft). Diameter: 1.14 m (3.74 ft). Span: 4.07 m (13.34 ft). Apogee: 250 km (150 mi).

Vikings 1 to 7 were Model 1 versions, 583" x 32" x 110", capable of reaching 168 km. Subsequent Vikings were Model 2 or Type 9 versions, 583" x 45" x 160", capable of reaching 252 km.

Payload: 450 kg (990 lb) to a 250 km altitude.

• Viking 8 test - . Nation: USA. Agency: USN. Apogee: 6.00 km (3.70 mi). Surge in thrust ripped rocket from the two bolts holding it to the pad and it flew horizontally across the launch site. Reached 6 km..

• Viking 9 Solar mission - . Nation: USA. Agency: USN. Apogee: 217 km (134 mi). Solar and cosmic radiation; photography research. Ran out of fuel. Launched at 1438 local time. Reached 219 km..

• Viking 10 Aeronomy/Ionosphere mission - . Nation: USA. Agency: USN. Apogee: 219 km (136 mi). Check power plant, controls, performance, and skin temperatures; upper-air pressure, density, winds, ionisation; cosmic rays; photography research. Launched at 1000 local time. Reached 219 km..

• Viking 11 re-entry vehicle test flight - . Nation: USA. Agency: USN. Apogee: 254 km (157 mi). Re-entry nose-cone heat transfer experiment; photography research. Launched at 1000 local time. Reached 254 km. The rocket was turned by 180 degrees at apogee and the nose cone separated, diving back down into the atmosphere..

• Viking 12 re-entry vehicle test flight - . Nation: USA. Agency: USN. Apogee: 231 km (143 mi). Re-entry nose-cone heat transfer experiment; photography; atmosphere research. Launched at 1455 local time. Reached 232 km..

• Vanguard TV0 test - . Nation: USA. Agency: USN. Apogee: 204 km (126 mi).

  First Vanguard test; re-entry studies; not a vertical firing. Launched at 0103 local time. First test rocket in the IGY-U.S. satellite program, a one-stage NRL Viking, attained an altitude of 176 km and a speed of 6,400 kph. Viking No. 13 carried a "minitrack" radio transmitter which was ejected at 80 km and tracked.

• Vanguard TV1 test - . Nation: USA. Agency: USN. Apogee: 195 km (121 mi). Test of Vanguard third-stage separation and firing at altitude.Launched at 0129 local time..